(Solved):   E-Ammonium, NH4+ A positive result in the test described below indicates the presence of w ...

 

E-Ammonium, NH4+ A positive result in the test described below indicates the presence of which cation in a solution? 1. Sodium hydroxide was added to a solution, and a colorless|gas with a pungent smell was liberated. The gas turned moist red litmus paper blue. 2. Dilute ammonia solution was added to a solution, and a white precipitate was formed. An excess of sodium hydroxide solution was added, and the white solid redissolved. The white solid reformed upon the addition of enough acid to neutralize the solution, and it disappeared when excess acid was added 3. Sulfuric acid was added to a solution, and a white precipitate was formed. A precipitate was not formed upon the addition of sodium hydroxide to a solution of the ions. 4) A blood red solution was formed upon the addition of potassium thiocyanate to a solution of the ions. 5) Sodium hydroxide was added to a solution of the ions, and a white precipitate was formed. A yellow precipitate was formed upon addition of potassium iodide to a solution of the ions.